CN113882355A - Vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves - Google Patents
Vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves Download PDFInfo
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- CN113882355A CN113882355A CN202111276460.3A CN202111276460A CN113882355A CN 113882355 A CN113882355 A CN 113882355A CN 202111276460 A CN202111276460 A CN 202111276460A CN 113882355 A CN113882355 A CN 113882355A
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- drainage
- soft soil
- vacuum
- drain pipe
- ultrasonic waves
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- 239000002689 soil Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004062 sedimentation Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000004568 cement Substances 0.000 claims description 17
- 239000010802 sludge Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007596 consolidation process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Abstract
The application discloses a vacuum drainage sedimentation system and a method for treating soft soil by using ultrasonic waves, which relate to the technical field of foundation drainage and solve the problem of poor drainage effect, and comprise an ultrasonic wave emitting device and a vacuum drainage device; the ultrasonic wave transmitting device transmits ultrasonic waves with the frequency range of 25-50kHz and the density of 0.25-0.45W/mL to the soft soil; the vacuum drainage device comprises a vacuum pump and a drainage pipe with a water seepage hole, the drainage pipe is inserted into the soft soil foundation, and the vacuum pump is communicated with the drainage pipe and used for vacuumizing the inside of the drainage pipe and draining water seeping into the drainage pipe. This application can effectively improve drainage effect.
Description
Technical Field
The application relates to the technical field of foundation drainage, in particular to a vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves.
Background
Soft soil generally refers to cohesive soil which has large natural water content, high compressibility, low bearing capacity and low shear strength and is in a soft-plastic-flow-plastic state. Currently, there are many methods for soft soil foundations, of which the drainage consolidation method is one of the most commonly used methods. In the drainage consolidation method work progress at present, after drainage a period, the pore water pressure of underground deep layer slowly dissipates, and water and gas through the drain bar exhaust slowly reduce, simultaneously because the horizontal drainage channel of various reasons blocks up, final soil particle is in pore water equilibrium steady state, and the drainage consolidation is in the stagnation state, and drainage effect is relatively poor.
Disclosure of Invention
In order to improve the drainage effect of the soft soil foundation, the application provides a vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves.
On the one hand, the application provides an utilize vacuum drainage settlement system of ultrasonic treatment weak soil, adopts following technical scheme:
a vacuum drainage sedimentation system for treating soft soil by utilizing ultrasonic waves comprises an ultrasonic wave transmitting device and a vacuum drainage device; the ultrasonic wave transmitting device transmits ultrasonic waves with the frequency range of 25-50kHz and the density of 0.25-0.45W/mL to the soft soil; the vacuum drainage device comprises a vacuum pump and a drainage pipe with a water seepage hole, the drainage pipe is inserted into the soft soil foundation, and the vacuum pump is communicated with the drainage pipe and used for vacuumizing the inside of the drainage pipe and draining water seeping into the drainage pipe.
Optionally, the vacuum drainage device further comprises a hydraulic pump, the drain pipe is provided with a spiral drill bit, and the hydraulic pump drives the drain pipe to longitudinally feed through a transmission mechanism.
Optionally, the vacuum drainage device further comprises an air booster pump, and the air booster pump is communicated with the drainage pipe and used for increasing air pressure in the drainage pipe.
Optionally, when the air booster pump works, the vacuum pump is turned off.
Optionally, the drainage sedimentation system further comprises a cement pouring pump for pouring cement into the hole formed after the drainage pipe is pumped away.
Optionally, the diameter of the water seepage hole is 5-20 mm.
On the other hand, the application provides a vacuum drainage sedimentation method for treating soft soil by using ultrasonic waves, which adopts the following technical scheme:
a vacuum drainage sedimentation method for treating soft soil by using ultrasonic waves comprises the following steps:
s1: the hydraulic pump longitudinally feeds and rotates the drain pipe with the spiral drill bit through the driving mechanism to go deep 8-12m underground, and sludge is taken out in the feeding process of the drain pipe;
s2: starting an ultrasonic wave transmitting device, transmitting ultrasonic waves with the frequency range of 25-50kHz and the density of 0.25-0.45W/mL to the soft soil foundation, dehydrating the soft soil, and promoting the settlement of the soft soil foundation;
s3: starting a vacuum pump, wherein the vacuum pump is communicated with a drain pipe, and the air pressure in the drain pipe is reduced to be below 100 Pa; in the process, water in the soft soil permeates into the drainage pipe; and continuously vacuumizing, and pumping water out of the drain pipe and discharging the water into the drain ditch.
Optionally, after step S3, steps S4, S5 are also included:
s4: the air booster pump is communicated with the drain pipe, after the vacuum pump is closed, the air booster pump is opened, so that the air pressure in the drain pipe reaches 2-5 times of the atmospheric pressure, and the sludge in the water seepage hole of the drain pipe is pressed out of the drain pipe;
s5: and repeating the operations from the second step to the fourth step until the soft soil foundation is consolidated to the set requirement.
Optionally, after the step S5, the method further includes step S6:
s6: and (5) retracting the drain pipe, and pouring the hole where the original drain pipe is located through a cement pouring pump.
In summary, the present application includes at least one of the following benefits:
1. the effect of ultrasonic wave on the soft soil dehydration is utilized, so that the soft soil sedimentation efficiency is greatly improved;
2. the arrangement of the air booster pump can effectively flush away sludge blocked on the water seepage hole of the drain pipe; the two steps of vacuumizing and pressurizing are repeatedly carried out, so that a blocking layer around the drainage pipe can expand and contract to form a large number of cracks, and the anti-blocking effect is achieved;
3. the holes formed after the drainage pipe is pumped away are injected with the slurry through a cement pouring pump to form cement columns, so that drainage channels are blocked, the groundwater is prevented from continuously seeping, and the post-construction settlement effect is reduced; and the cement column can effectively improve the strength of the foundation.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present application;
FIG. 2 is a schematic diagram of the method steps of the present application;
fig. 3 is a functional schematic diagram of the system of the present application.
Description of reference numerals: 1. an ultrasonic wave emitting device; 2. a vacuum pump; 3. a drain pipe; 4. an air booster pump; 5. a hydraulic pump; 6. a cement pouring pump; 7. and a control chamber.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses utilize vacuum drainage settlement system of ultrasonic treatment weak soil.
A vacuum drainage sedimentation system for treating soft soil by using ultrasonic waves comprises an ultrasonic transmitting device 1, a vacuum drainage device and a cement pouring pump 6. And (3) constructing an operation and control room 7 at a construction site, and inputting instructions to the controllers of all the equipment by workers in the operation and control room 7 to operate all the equipment to operate.
The ultrasonic wave emitting device 1 emits low-frequency ultrasonic waves to the soft soil foundation, so that the soft soil is dehydrated, and the settlement of the soft soil is promoted.
The vacuum drainage apparatus includes a vacuum pump 2, a drain pipe 3, an air booster pump 4, and a hydraulic pump 5. The drain pipe 3 can be provided with a plurality of heels and uniformly distributed on the foundation. The periphery of the drain pipe 3 is uniformly distributed with water seepage holes with the aperture of 5-20 mm. The diameter of the water seepage hole in the embodiment is 10 mm. The lower end of the drain pipe 3 is provided with a triangular drill bit with right-handed threads. The hydraulic pump 5 drives the drain pipe 3 to feed longitudinally through a transmission mechanism, and the drain pipe 3 is inserted into the ground by about 8-12 m. In this embodiment, the drain pipe is inserted into the ground 10m, and the drain pipe 3 with threads is rotated during the pipe insertion process and carries out sludge.
The vacuum pump 2 is communicated with the drain pipe 3, and when the vacuum pump 2 is started, the air pressure in the drain pipe 3 is vacuumized to about 100 Pa. At this time, the water in the soft soil permeates into the drain pipe 3 through the water seepage holes of the drain pipe 3. The vacuum pumping is continued, and water is pumped out of the drain pipe 3 through the vacuum pump 2.
In order to reduce the clogging of the water seepage holes on the drain pipe 3, an air booster pump 4 is communicated with the drain pipe 3. After the vacuum pump 2 is turned off, the air booster pump 4 is started to increase the air pressure in the drain pipe 3 to 2-5 times the atmospheric pressure, thereby discharging the sludge blocked on the water seepage hole. The vacuum pump 2 and the air booster pump 4 work repeatedly, so that the silting layer on the periphery of the drain pipe 3 contracts and expands repeatedly along with the change of air pressure, a large number of cracks are formed, the blockage of a water seepage hole is effectively prevented, and the drainage efficiency is improved.
And after the foundation consolidation settlement meets the set requirement, pumping out the drainage pipe 3. The cement pouring pump 6 is started, cement paste is injected into the hole formed after the water discharging pipe 3 is pumped out, after the cement paste is solidified to form the cement column, the underground water of the foundation under the action of load is effectively prevented from continuously seeping, and the strength of the foundation can be effectively improved by the cement column.
The application also discloses a vacuum drainage sedimentation method for treating soft soil by using ultrasonic waves, which comprises the following steps:
s1: the hydraulic pump 5 longitudinally feeds and rotates the drain pipe 3 with the spiral drill bit through the driving mechanism to go deep into the ground for 10m, and sludge is taken out in the feeding process of the drain pipe 3;
s2: starting the ultrasonic wave transmitting device 1, transmitting ultrasonic waves with the frequency range of 25-50kHz and the density of 0.25-0.45W/mL to the soft soil foundation to dehydrate the soft soil and promote the settlement of the soft soil foundation;
s3: starting the vacuum pump 2, enabling the vacuum pump 2 to be communicated with the drain pipe 3, and reducing the air pressure in the drain pipe 3 to 100 Pa; in the process, water in the soft soil permeates into the drain pipe 3; continuously vacuumizing, pumping water out of the drain pipe 3 and discharging the water into a drain ditch;
s4: the vacuum pump 2 is closed, the air booster pump 4 is opened, the air booster pump 4 is communicated with the drain pipe 3, so that the air pressure in the drain pipe 3 reaches 2-5 times of the atmospheric pressure, and the sludge in the water seepage holes of the drain pipe 3 is pressed out of the drain pipe 3;
s5: repeating the operations from the second step to the fourth step until the soft soil foundation is consolidated to the set requirement;
s6: the drain pipe 3 is collected, and the hole where the original drain pipe 3 is located is poured through the cement pouring pump 6.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides an utilize vacuum drainage settlement system of ultrasonic treatment weak soil which characterized in that: comprises an ultrasonic wave emitting device and a vacuum drainage device; the ultrasonic wave transmitting device transmits ultrasonic waves with the frequency range of 25-50kHz and the density of 0.25-0.45W/mL to the soft soil; the vacuum drainage device comprises a vacuum pump and a drainage pipe with a water seepage hole, the drainage pipe is inserted into the soft soil foundation, and the vacuum pump is communicated with the drainage pipe and used for vacuumizing the inside of the drainage pipe and draining water seeping into the drainage pipe.
2. The vacuum drainage sedimentation system for soft soil treatment by ultrasonic waves as claimed in claim 1, wherein: the vacuum drainage device further comprises a hydraulic pump, the drain pipe is provided with a spiral drill bit, and the hydraulic pump drives the drain pipe to longitudinally feed through a transmission mechanism.
3. The vacuum drainage sedimentation system for soft soil treatment by ultrasonic waves as claimed in claim 1, wherein: the vacuum drainage device further comprises an air booster pump, and the air booster pump is communicated with the drainage pipe and used for increasing air pressure in the drainage pipe.
4. The vacuum drainage sedimentation system for soft soil treatment by ultrasonic waves as claimed in claim 3, wherein: and when the air booster pump works, the vacuum pump is closed.
5. The vacuum drainage sedimentation system for soft soil treatment by ultrasonic waves as claimed in claim 1, wherein: the drainage settlement system also comprises a cement pouring pump which is used for pouring cement into the hole formed after the drainage pipe is pumped away.
6. The vacuum drainage sedimentation system for soft soil treatment by ultrasonic waves as claimed in claim 1, wherein: the aperture of the water seepage hole is 5-20 mm.
7. A vacuum drainage sedimentation method for treating soft soil by utilizing ultrasonic waves is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s1: the hydraulic pump longitudinally feeds and rotates the drain pipe with the spiral drill bit through the driving mechanism to go deep 8-12m underground, and sludge is taken out in the feeding process of the drain pipe;
s2: starting an ultrasonic wave transmitting device, transmitting ultrasonic waves with the frequency range of 25-50kHz and the density of 0.25-0.45W/mL to the soft soil foundation, dehydrating the soft soil, and promoting the settlement of the soft soil foundation;
s3: starting a vacuum pump, wherein the vacuum pump is communicated with a drain pipe, and the air pressure in the drain pipe is reduced to be below 100 Pa; in the process, water in the soft soil permeates into the drainage pipe; and continuously vacuumizing, and pumping water out of the drain pipe and discharging the water into the drain ditch.
8. The vacuum drainage sedimentation method for treating soft soil by using ultrasonic waves as claimed in claim 7, wherein the method comprises the following steps: s4, S5 are also included after step S3:
s4: the air booster pump is communicated with the drain pipe, after the vacuum pump is closed, the air booster pump is opened, so that the air pressure in the drain pipe reaches 2-5 times of the atmospheric pressure, and the sludge in the water seepage hole of the drain pipe is pressed out of the drain pipe;
s5: and repeating the operations from the second step to the fourth step until the soft soil foundation is consolidated to the set requirement.
9. The vacuum drainage sedimentation method for treating soft soil by using ultrasonic waves as claimed in claim 8, wherein the method comprises the following steps: s6 is also included after step S5:
s6: and (5) retracting the drain pipe, and pouring the hole where the original drain pipe is located through a cement pouring pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276460.3A CN113882355A (en) | 2021-10-29 | 2021-10-29 | Vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276460.3A CN113882355A (en) | 2021-10-29 | 2021-10-29 | Vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves |
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| Publication Number | Publication Date |
|---|---|
| CN113882355A true CN113882355A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111276460.3A Pending CN113882355A (en) | 2021-10-29 | 2021-10-29 | Vacuum drainage sedimentation system and method for treating soft soil by utilizing ultrasonic waves |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1399510A (en) * | 1972-10-11 | 1975-07-02 | Balfour Beatty Co Ltd | Artificial and natural structures |
| CN103669330A (en) * | 2013-12-06 | 2014-03-26 | 邓立新 | Ultrasonic vacuum preloading method |
| CN108978625A (en) * | 2018-08-21 | 2018-12-11 | 中铁第五勘察设计院集团有限公司 | A kind of sand pile joint High vacuum compacting method construction of soft soil treatment engineering method |
| CN209538158U (en) * | 2018-10-24 | 2019-10-25 | 中国海洋大学 | It is a kind of to make the processing unit that soil layer precipitation consolidates in submarine soil layer |
| CN112459043A (en) * | 2020-12-10 | 2021-03-09 | 中铁四局集团第一工程有限公司 | Three-dimensional disturbance type vacuum preloading foundation treatment system |
| JP2021147828A (en) * | 2020-03-18 | 2021-09-27 | 株式会社大林組 | Soil drainage device and construction method of soil drainage device |
-
2021
- 2021-10-29 CN CN202111276460.3A patent/CN113882355A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1399510A (en) * | 1972-10-11 | 1975-07-02 | Balfour Beatty Co Ltd | Artificial and natural structures |
| CN103669330A (en) * | 2013-12-06 | 2014-03-26 | 邓立新 | Ultrasonic vacuum preloading method |
| CN108978625A (en) * | 2018-08-21 | 2018-12-11 | 中铁第五勘察设计院集团有限公司 | A kind of sand pile joint High vacuum compacting method construction of soft soil treatment engineering method |
| CN209538158U (en) * | 2018-10-24 | 2019-10-25 | 中国海洋大学 | It is a kind of to make the processing unit that soil layer precipitation consolidates in submarine soil layer |
| JP2021147828A (en) * | 2020-03-18 | 2021-09-27 | 株式会社大林組 | Soil drainage device and construction method of soil drainage device |
| CN112459043A (en) * | 2020-12-10 | 2021-03-09 | 中铁四局集团第一工程有限公司 | Three-dimensional disturbance type vacuum preloading foundation treatment system |
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Application publication date: 20220104 |
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| RJ01 | Rejection of invention patent application after publication |